Vivaldi’s set of four wildly evocative violin concertos ranks among the most popular pieces of music on the planet, treasured in record collections, constantly reimagined, and an evergreen on-hold soundtrack. But how well do we really know them? Who did he write them for, and where, and when? Was he a poet, a priest, or even a spy? Bring your questions to this open discussion with Dr Hannah French, author of the soon-to-be-published The Rolling Year: a companion to Vivaldi’s The Four Seasons.